Remove RuleEvaluationEngine from AppIntegrityManagerService.

The RuleEvaluationEngine is no longer needed as we are deprecating the AppIntegrityManagerService.

Change-Id: I542554deb4b0a3c8c418ed437234a714c5c0e0a4

4 files changed, 1 insertions, 401 deletions

diff --git a/services/core/java/com/android/server/integrity/AppIntegrityManagerServiceImpl.java b/services/core/java/com/android/server/integrity/AppIntegrityManagerServiceImpl.java
index dc2c95797b8b..636854b85ee4 100644
--- a/services/core/java/com/android/server/integrity/AppIntegrityManagerServiceImpl.java
+++ b/services/core/java/com/android/server/integrity/AppIntegrityManagerServiceImpl.java
@@ -63,7 +63,6 @@ import com.android.internal.pm.parsing.PackageParser2;
 import com.android.internal.pm.pkg.parsing.ParsingPackageUtils;
 import com.android.internal.util.ArrayUtils;
 import com.android.server.LocalServices;
-import com.android.server.integrity.engine.RuleEvaluationEngine;
 import com.android.server.integrity.model.IntegrityCheckResult;
 import com.android.server.integrity.model.RuleMetadata;
 import com.android.server.pm.PackageManagerServiceUtils;
@@ -130,7 +129,6 @@ public class AppIntegrityManagerServiceImpl extends IAppIntegrityManager.Stub {
     private final Handler mHandler;
     private final PackageManagerInternal mPackageManagerInternal;
     private final Supplier<PackageParser2> mParserSupplier;
-    private final RuleEvaluationEngine mEvaluationEngine;
     private final IntegrityFileManager mIntegrityFileManager;
 
     /** Create an instance of {@link AppIntegrityManagerServiceImpl}. */
@@ -142,7 +140,6 @@ public class AppIntegrityManagerServiceImpl extends IAppIntegrityManager.Stub {
                 context,
                 LocalServices.getService(PackageManagerInternal.class),
                 PackageParserUtils::forParsingFileWithDefaults,
-                RuleEvaluationEngine.getRuleEvaluationEngine(),
                 IntegrityFileManager.getInstance(),
                 handlerThread.getThreadHandler());
     }
@@ -152,13 +149,11 @@ public class AppIntegrityManagerServiceImpl extends IAppIntegrityManager.Stub {
             Context context,
             PackageManagerInternal packageManagerInternal,
             Supplier<PackageParser2> parserSupplier,
-            RuleEvaluationEngine evaluationEngine,
             IntegrityFileManager integrityFileManager,
             Handler handler) {
         mContext = context;
         mPackageManagerInternal = packageManagerInternal;
         mParserSupplier = parserSupplier;
-        mEvaluationEngine = evaluationEngine;
         mIntegrityFileManager = integrityFileManager;
         mHandler = handler;
 
@@ -330,7 +325,7 @@ public class AppIntegrityManagerServiceImpl extends IAppIntegrityManager.Stub {
                                 + " installers "
                                 + allowedInstallers);
             }
-            IntegrityCheckResult result = mEvaluationEngine.evaluate(appInstallMetadata);
+            IntegrityCheckResult result = IntegrityCheckResult.allow();
             if (!result.getMatchedRules().isEmpty() || DEBUG_INTEGRITY_COMPONENT) {
                 Slog.i(
                         TAG,
diff --git a/services/core/java/com/android/server/integrity/engine/RuleEvaluationEngine.java b/services/core/java/com/android/server/integrity/engine/RuleEvaluationEngine.java
deleted file mode 100644
index e8c828bb85b6..000000000000
--- a/services/core/java/com/android/server/integrity/engine/RuleEvaluationEngine.java
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server.integrity.engine;
-
-import android.content.integrity.AppInstallMetadata;
-import android.content.integrity.Rule;
-import android.util.Slog;
-
-import com.android.internal.annotations.VisibleForTesting;
-import com.android.server.integrity.IntegrityFileManager;
-import com.android.server.integrity.model.IntegrityCheckResult;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * The engine used to evaluate rules against app installs.
- *
- * <p>Every app install is evaluated against rules (pushed by the verifier) by the evaluation engine
- * to allow/block that install.
- */
-public class RuleEvaluationEngine {
-    private static final String TAG = "RuleEvaluation";
-
-    // The engine for loading rules, retrieving metadata for app installs, and evaluating app
-    // installs against rules.
-    private static RuleEvaluationEngine sRuleEvaluationEngine;
-
-    private final IntegrityFileManager mIntegrityFileManager;
-
-    @VisibleForTesting
-    RuleEvaluationEngine(IntegrityFileManager integrityFileManager) {
-        mIntegrityFileManager = integrityFileManager;
-    }
-
-    /** Provide a singleton instance of the rule evaluation engine. */
-    public static synchronized RuleEvaluationEngine getRuleEvaluationEngine() {
-        if (sRuleEvaluationEngine == null) {
-            return new RuleEvaluationEngine(IntegrityFileManager.getInstance());
-        }
-        return sRuleEvaluationEngine;
-    }
-
-    /**
-     * Load, and match the list of rules against an app install metadata.
-     *
-     * @param appInstallMetadata Metadata of the app to be installed, and to evaluate the rules
-     *                           against.
-     * @return result of the integrity check
-     */
-    public IntegrityCheckResult evaluate(
-            AppInstallMetadata appInstallMetadata) {
-        List<Rule> rules = loadRules(appInstallMetadata);
-        return IntegrityCheckResult.allow();
-    }
-
-    private List<Rule> loadRules(AppInstallMetadata appInstallMetadata) {
-        if (!mIntegrityFileManager.initialized()) {
-            Slog.w(TAG, "Integrity rule files are not available.");
-            return Collections.emptyList();
-        }
-
-        try {
-            return mIntegrityFileManager.readRules(appInstallMetadata);
-        } catch (Exception e) {
-            Slog.e(TAG, "Error loading rules.", e);
-            return new ArrayList<>();
-        }
-    }
-}
diff --git a/services/tests/servicestests/src/com/android/server/integrity/AppIntegrityManagerServiceImplTest.java b/services/tests/servicestests/src/com/android/server/integrity/AppIntegrityManagerServiceImplTest.java
index eb9cce007b77..d1f6c2f9f1f0 100644
--- a/services/tests/servicestests/src/com/android/server/integrity/AppIntegrityManagerServiceImplTest.java
+++ b/services/tests/servicestests/src/com/android/server/integrity/AppIntegrityManagerServiceImplTest.java
@@ -69,7 +69,6 @@ import androidx.test.InstrumentationRegistry;
 import com.android.internal.R;
 import com.android.internal.pm.parsing.PackageParser2;
 import com.android.server.compat.PlatformCompat;
-import com.android.server.integrity.engine.RuleEvaluationEngine;
 import com.android.server.integrity.model.IntegrityCheckResult;
 import com.android.server.pm.parsing.TestPackageParser2;
 import com.android.server.testutils.TestUtils;
@@ -138,7 +137,6 @@ public class AppIntegrityManagerServiceImplTest {
     @Mock PlatformCompat mPlatformCompat;
     @Mock Context mMockContext;
     @Mock Resources mMockResources;
-    @Mock RuleEvaluationEngine mRuleEvaluationEngine;
     @Mock IntegrityFileManager mIntegrityFileManager;
     @Mock Handler mHandler;
 
@@ -176,7 +174,6 @@ public class AppIntegrityManagerServiceImplTest {
                         mMockContext,
                         mPackageManagerInternal,
                         mParserSupplier,
-                        mRuleEvaluationEngine,
                         mIntegrityFileManager,
                         mHandler);
 
@@ -307,91 +304,6 @@ public class AppIntegrityManagerServiceImplTest {
     }
 
     @Test
-    public void handleBroadcast_correctArgs() throws Exception {
-        allowlistUsAsRuleProvider();
-        makeUsSystemApp();
-        ArgumentCaptor<BroadcastReceiver> broadcastReceiverCaptor =
-                ArgumentCaptor.forClass(BroadcastReceiver.class);
-        verify(mMockContext)
-                .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
-        Intent intent = makeVerificationIntent();
-        when(mRuleEvaluationEngine.evaluate(any())).thenReturn(IntegrityCheckResult.allow());
-
-        broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
-        runJobInHandler();
-
-        ArgumentCaptor<AppInstallMetadata> metadataCaptor =
-                ArgumentCaptor.forClass(AppInstallMetadata.class);
-        verify(mRuleEvaluationEngine).evaluate(metadataCaptor.capture());
-        AppInstallMetadata appInstallMetadata = metadataCaptor.getValue();
-        assertEquals(PACKAGE_NAME, appInstallMetadata.getPackageName());
-        assertThat(appInstallMetadata.getAppCertificates()).containsExactly(APP_CERT);
-        assertEquals(INSTALLER_SHA256, appInstallMetadata.getInstallerName());
-        // we cannot check installer cert because it seems to be device specific.
-        assertEquals(VERSION_CODE, appInstallMetadata.getVersionCode());
-        assertFalse(appInstallMetadata.isPreInstalled());
-        // Asserting source stamp not present.
-        assertFalse(appInstallMetadata.isStampPresent());
-        assertFalse(appInstallMetadata.isStampVerified());
-        assertFalse(appInstallMetadata.isStampTrusted());
-        assertNull(appInstallMetadata.getStampCertificateHash());
-        // These are hardcoded in the test apk android manifest
-        Map<String, String> allowedInstallers =
-                appInstallMetadata.getAllowedInstallersAndCertificates();
-        assertEquals(2, allowedInstallers.size());
-        assertEquals(PLAY_STORE_CERT, allowedInstallers.get(PLAY_STORE_PKG));
-        assertEquals(INSTALLER_CERTIFICATE_NOT_EVALUATED, allowedInstallers.get(ADB_INSTALLER));
-    }
-
-    @Test
-    public void handleBroadcast_correctArgs_multipleCerts() throws Exception {
-        allowlistUsAsRuleProvider();
-        makeUsSystemApp();
-        ArgumentCaptor<BroadcastReceiver> broadcastReceiverCaptor =
-                ArgumentCaptor.forClass(BroadcastReceiver.class);
-        verify(mMockContext)
-                .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
-        Intent intent = makeVerificationIntent();
-        intent.setDataAndType(Uri.fromFile(mTestApkTwoCerts), PACKAGE_MIME_TYPE);
-        when(mRuleEvaluationEngine.evaluate(any())).thenReturn(IntegrityCheckResult.allow());
-
-        broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
-        runJobInHandler();
-
-        ArgumentCaptor<AppInstallMetadata> metadataCaptor =
-                ArgumentCaptor.forClass(AppInstallMetadata.class);
-        verify(mRuleEvaluationEngine).evaluate(metadataCaptor.capture());
-        AppInstallMetadata appInstallMetadata = metadataCaptor.getValue();
-        assertThat(appInstallMetadata.getAppCertificates())
-                .containsExactly(DUMMY_APP_TWO_CERTS_CERT_1, DUMMY_APP_TWO_CERTS_CERT_2);
-    }
-
-    @Test
-    public void handleBroadcast_correctArgs_sourceStamp() throws Exception {
-        allowlistUsAsRuleProvider();
-        makeUsSystemApp();
-        ArgumentCaptor<BroadcastReceiver> broadcastReceiverCaptor =
-                ArgumentCaptor.forClass(BroadcastReceiver.class);
-        verify(mMockContext)
-                .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
-        Intent intent = makeVerificationIntent();
-        intent.setDataAndType(Uri.fromFile(mTestApkSourceStamp), PACKAGE_MIME_TYPE);
-        when(mRuleEvaluationEngine.evaluate(any())).thenReturn(IntegrityCheckResult.allow());
-
-        broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
-        runJobInHandler();
-
-        ArgumentCaptor<AppInstallMetadata> metadataCaptor =
-                ArgumentCaptor.forClass(AppInstallMetadata.class);
-        verify(mRuleEvaluationEngine).evaluate(metadataCaptor.capture());
-        AppInstallMetadata appInstallMetadata = metadataCaptor.getValue();
-        assertTrue(appInstallMetadata.isStampPresent());
-        assertTrue(appInstallMetadata.isStampVerified());
-        assertTrue(appInstallMetadata.isStampTrusted());
-        assertEquals(SOURCE_STAMP_CERTIFICATE_HASH, appInstallMetadata.getStampCertificateHash());
-    }
-
-    @Test
     public void handleBroadcast_allow() throws Exception {
         allowlistUsAsRuleProvider();
         makeUsSystemApp();
@@ -400,7 +312,6 @@ public class AppIntegrityManagerServiceImplTest {
         verify(mMockContext)
                 .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
         Intent intent = makeVerificationIntent();
-        when(mRuleEvaluationEngine.evaluate(any())).thenReturn(IntegrityCheckResult.allow());
 
         broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
         runJobInHandler();
@@ -411,32 +322,6 @@ public class AppIntegrityManagerServiceImplTest {
     }
 
     @Test
-    public void handleBroadcast_reject() throws Exception {
-        allowlistUsAsRuleProvider();
-        makeUsSystemApp();
-        ArgumentCaptor<BroadcastReceiver> broadcastReceiverCaptor =
-                ArgumentCaptor.forClass(BroadcastReceiver.class);
-        verify(mMockContext)
-                .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
-        when(mRuleEvaluationEngine.evaluate(any()))
-                .thenReturn(
-                        IntegrityCheckResult.deny(
-                                Arrays.asList(
-                                        new Rule(
-                                                new AtomicFormula.BooleanAtomicFormula(
-                                                        AtomicFormula.PRE_INSTALLED, false),
-                                                Rule.DENY))));
-        Intent intent = makeVerificationIntent();
-
-        broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
-        runJobInHandler();
-
-        verify(mPackageManagerInternal)
-                .setIntegrityVerificationResult(
-                        1, PackageManagerInternal.INTEGRITY_VERIFICATION_REJECT);
-    }
-
-    @Test
     public void handleBroadcast_notInitialized() throws Exception {
         allowlistUsAsRuleProvider();
         makeUsSystemApp();
@@ -446,7 +331,6 @@ public class AppIntegrityManagerServiceImplTest {
         verify(mMockContext)
                 .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
         Intent intent = makeVerificationIntent();
-        when(mRuleEvaluationEngine.evaluate(any())).thenReturn(IntegrityCheckResult.allow());
 
         broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
         runJobInHandler();
@@ -467,8 +351,6 @@ public class AppIntegrityManagerServiceImplTest {
         verify(mMockContext, atLeastOnce())
                 .registerReceiver(broadcastReceiverCaptor.capture(), any(), any(), any());
         Intent intent = makeVerificationIntent(TEST_FRAMEWORK_PACKAGE);
-        when(mRuleEvaluationEngine.evaluate(any()))
-                .thenReturn(IntegrityCheckResult.deny(/* rule= */ null));
 
         broadcastReceiverCaptor.getValue().onReceive(mMockContext, intent);
         runJobInHandler();
diff --git a/services/tests/servicestests/src/com/android/server/integrity/engine/RuleEvaluationEngineTest.java b/services/tests/servicestests/src/com/android/server/integrity/engine/RuleEvaluationEngineTest.java
deleted file mode 100644
index e1ee9c3a1c8f..000000000000
--- a/services/tests/servicestests/src/com/android/server/integrity/engine/RuleEvaluationEngineTest.java
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server.integrity.engine;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.Mockito.when;
-
-import android.content.integrity.AppInstallMetadata;
-import android.content.integrity.IntegrityFormula;
-import android.content.integrity.Rule;
-
-import com.android.server.integrity.IntegrityFileManager;
-import com.android.server.integrity.model.IntegrityCheckResult;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
-
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-
-@RunWith(JUnit4.class)
-public class RuleEvaluationEngineTest {
-
-    private static final String INSTALLER_1 = "installer1";
-    private static final String INSTALLER_1_CERT = "installer1_cert";
-    private static final String INSTALLER_2 = "installer2";
-    private static final String INSTALLER_2_CERT = "installer2_cert";
-
-    private static final String RANDOM_INSTALLER = "random";
-    private static final String RANDOM_INSTALLER_CERT = "random_cert";
-
-    @Mock
-    private IntegrityFileManager mIntegrityFileManager;
-
-    private RuleEvaluationEngine mEngine;
-
-    @Before
-    public void setUp() throws Exception {
-        MockitoAnnotations.initMocks(this);
-
-        mEngine = new RuleEvaluationEngine(mIntegrityFileManager);
-
-        when(mIntegrityFileManager.readRules(any())).thenReturn(Collections.singletonList(new Rule(
-                IntegrityFormula.Installer.notAllowedByManifest(), Rule.DENY)));
-
-        when(mIntegrityFileManager.initialized()).thenReturn(true);
-    }
-
-    @Test
-    public void testAllowedInstallers_empty() {
-        AppInstallMetadata appInstallMetadata1 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_1)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_1_CERT))
-                        .build();
-        AppInstallMetadata appInstallMetadata2 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_2)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_2_CERT))
-                        .build();
-        AppInstallMetadata appInstallMetadata3 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(RANDOM_INSTALLER)
-                        .setInstallerCertificates(Collections.singletonList(RANDOM_INSTALLER_CERT))
-                        .build();
-
-        assertThat(mEngine.evaluate(appInstallMetadata1).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-        assertThat(mEngine.evaluate(appInstallMetadata2).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-        assertThat(mEngine.evaluate(appInstallMetadata3).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-    }
-
-    @Test
-    public void testAllowedInstallers_oneElement() {
-        Map<String, String> allowedInstallers =
-                Collections.singletonMap(INSTALLER_1, INSTALLER_1_CERT);
-
-        AppInstallMetadata appInstallMetadata1 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_1)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_1_CERT))
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata1).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-
-        AppInstallMetadata appInstallMetadata2 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(RANDOM_INSTALLER)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_1_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata2).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-
-        AppInstallMetadata appInstallMetadata3 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_1)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(RANDOM_INSTALLER_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata3).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-
-        AppInstallMetadata appInstallMetadata4 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_1)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(RANDOM_INSTALLER_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata4).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-    }
-
-    @Test
-    public void testAllowedInstallers_multipleElement() {
-        Map<String, String> allowedInstallers = new HashMap<>(2);
-        allowedInstallers.put(INSTALLER_1, INSTALLER_1_CERT);
-        allowedInstallers.put(INSTALLER_2, INSTALLER_2_CERT);
-
-        AppInstallMetadata appInstallMetadata1 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_1)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_1_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata1).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-
-        AppInstallMetadata appInstallMetadata2 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_2)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_2_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata2).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-
-        AppInstallMetadata appInstallMetadata3 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_1)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_2_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata3).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-
-        AppInstallMetadata appInstallMetadata4 =
-                getAppInstallMetadataBuilder()
-                        .setInstallerName(INSTALLER_2)
-                        .setAllowedInstallersAndCert(allowedInstallers)
-                        .setInstallerCertificates(Collections.singletonList(INSTALLER_1_CERT))
-                        .build();
-        assertThat(mEngine.evaluate(appInstallMetadata4).getEffect())
-                .isEqualTo(IntegrityCheckResult.Effect.ALLOW);
-    }
-
-    /** Returns a builder with all fields filled with some placeholder data. */
-    private AppInstallMetadata.Builder getAppInstallMetadataBuilder() {
-        return new AppInstallMetadata.Builder()
-                .setPackageName("abc")
-                .setAppCertificates(Collections.singletonList("abc"))
-                .setAppCertificateLineage(Collections.singletonList("abc"))
-                .setInstallerCertificates(Collections.singletonList("abc"))
-                .setInstallerName("abc")
-                .setVersionCode(-1)
-                .setIsPreInstalled(true);
-    }
-}